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130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
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/* UNIX group file access module */
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#include "Python.h"
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#include <sys/types.h>
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#include <grp.h>
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static PyObject *
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mkgrent(struct group *p)
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{
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PyObject *v, *w;
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char **member;
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if ((w = PyList_New(0)) == NULL) {
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return NULL;
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}
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for (member = p->gr_mem; *member != NULL; member++) {
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PyObject *x = PyString_FromString(*member);
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if (x == NULL || PyList_Append(w, x) != 0) {
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Py_XDECREF(x);
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Py_DECREF(w);
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return NULL;
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}
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Py_DECREF(x);
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}
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v = Py_BuildValue("(sslO)",
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p->gr_name,
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p->gr_passwd,
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#if defined(NeXT) && defined(_POSIX_SOURCE) && defined(__LITTLE_ENDIAN__)
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/* Correct a bug present on Intel machines in NextStep 3.2 and 3.3;
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for later versions you may have to remove this */
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(long)p->gr_short_pad, /* ugh-NeXT broke the padding */
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#else
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(long)p->gr_gid,
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#endif
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w);
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Py_DECREF(w);
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return v;
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}
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static PyObject *
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grp_getgrgid(PyObject *self, PyObject *args)
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{
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int gid;
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struct group *p;
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if (!PyArg_ParseTuple(args, "i:getgrgid", &gid))
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return NULL;
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if ((p = getgrgid(gid)) == NULL) {
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PyErr_SetString(PyExc_KeyError, "getgrgid(): gid not found");
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return NULL;
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}
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return mkgrent(p);
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}
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static PyObject *
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grp_getgrnam(PyObject *self, PyObject *args)
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{
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char *name;
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struct group *p;
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if (!PyArg_ParseTuple(args, "s:getgrnam", &name))
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return NULL;
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if ((p = getgrnam(name)) == NULL) {
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PyErr_SetString(PyExc_KeyError, "getgrnam(): name not found");
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return NULL;
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}
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return mkgrent(p);
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}
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static PyObject *
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grp_getgrall(PyObject *self, PyObject *args)
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{
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PyObject *d;
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struct group *p;
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if (!PyArg_ParseTuple(args, ":getgrall"))
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return NULL;
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if ((d = PyList_New(0)) == NULL)
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return NULL;
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setgrent();
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while ((p = getgrent()) != NULL) {
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PyObject *v = mkgrent(p);
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if (v == NULL || PyList_Append(d, v) != 0) {
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Py_XDECREF(v);
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Py_DECREF(d);
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return NULL;
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}
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Py_DECREF(v);
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}
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endgrent();
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return d;
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}
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static PyMethodDef grp_methods[] = {
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{"getgrgid", grp_getgrgid, METH_VARARGS,
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"getgrgid(id) -> tuple\n\
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Return the group database entry for the given numeric group ID. If\n\
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id is not valid, raise KeyError."},
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{"getgrnam", grp_getgrnam, METH_VARARGS,
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"getgrnam(name) -> tuple\n\
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Return the group database entry for the given group name. If\n\
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name is not valid, raise KeyError."},
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{"getgrall", grp_getgrall, METH_VARARGS,
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"getgrall() -> list of tuples\n\
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Return a list of all available group entries, in arbitrary order."},
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{NULL, NULL} /* sentinel */
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};
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static char grp__doc__[] =
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"Access to the Unix group database.\n\
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\n\
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Group entries are reported as 4-tuples containing the following fields\n\
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from the group database, in order:\n\
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\n\
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name - name of the group\n\
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passwd - group password (encrypted); often empty\n\
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gid - numeric ID of the group\n\
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mem - list of members\n\
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\n\
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The gid is an integer, name and password are strings. (Note that most\n\
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users are not explicitly listed as members of the groups they are in\n\
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according to the password database. Check both databases to get\n\
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complete membership information.)";
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DL_EXPORT(void)
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initgrp(void)
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{
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Py_InitModule3("grp", grp_methods, grp__doc__);
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}
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